After all the negative reviews I stumbled across MyCloud NAS Synology. Nothing stood in the reviews of crashes on the network, and the like. Unfortunately, I have probably caught a Monday device. Device super packed, quickly pushed the brand new drive and also found the net. Then, the software should be loaded, worked well so far, but after that the NAS rebooted and "no Synology found". The whole 5 times tried with other plates. Always the same.
Too bad, but the reversal of running and seems to work relatively well.